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參數(shù)資料
| 型號： | S1C6N3B0D0A0100 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, UUC54 |
| 封裝： | DIE-54 |
| 文件頁數(shù)： | 14/79頁 |
| 文件大?。?/td> | 606K |
| 代理商： | S1C6N3B0D0A0100 |
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S1C6N3B0 TECHNICAL MANUAL
EPSON
13
CHAPTER 4: PERIPHERAL CIARCUITS AND OPERATION (Oscillation Circuit)
4.2 Oscillation Circuit
4.2.1 Oscillator type
The S1C6N3B0 Series has a built-in oscillation circuit that generates the operating clock of the CPU and
the peripheral circuit. The oscillator type can be selected by mask option. Table 4.2.1.1 shows the oscilla-
tor type and oscillation frequency available for each model. See Chapter 6, "Electrical Characteristics" for
the oscillation start time and other characteristics.
Table 4.2.1.1 Oscillator type
Model
S1C6N3B0
S1C6A3B0
Supply voltage
0.8–3.6 V
1.7–3.6 V
Oscillation circuit (selected by mask option)
Crystal (32.768 kHz, Typ.) or CR (65 kHz, Typ.)
CR (250 kHz–500 kHz) or Ceramic (400 kHz–1 MHz)
4.2.2 Mask option
(1) Oscillator type
The oscillator can be selected from the two types shown in Table 4.2.1.1 for each of the S1C6N3B0 and
the S1C6A3B0 models.
(2) Dividing ratio of the prescaler (S1C6A3B0)
The high-speed CPU S1C6A3B0 has a built-in prescaler for making the source clock of the frequency
divider that generates the operating clocks of the peripheral circuits. The prescaler outputs fosc/12
clock when ceramic oscillation is selected and fosc/6 clock when CR oscillation is selected.
The S1C6N3B0 delivers the oscillation clock (32 kHz or 65 kHz) directly to the frequency divider for
the peripheral circuits.
4.2.3 Crystal oscillation circuit
The crystal oscillation circuit can be selected in the S1C6N3B0 by mask option. The oscillation frequency
(fosc) is 32.768 kHz (Typ.).
Figure 4.2.3.1 shows the configuration of the crystal oscillation circuit.
VSS
OSC2
OSC1
X'tal
CGX
CPU
and peripheral circuits
R
FX
CDX
R
DX
Fig. 4.2.3.1 Configuration of crystal oscillation circuit
As Figure 4.2.3.1 indicates, the crystal oscillation circuit can be configured simply by connecting the
crystal oscillator X'tal (Typ. 32.768 kHz) between the OSC1 and OSC2 terminals and the trimmer capaci-
tor CGX (5–25pF) between the OSC1 and VSS terminals.
4.2.4 CR oscillation circuit
The CR oscillation circuit can be selected for all the S1C6N3B0 models by mask option. The oscillation
frequency (fosc) of the S1C6N3B0 is 65 kHz (Typ.) and the S1C6A3B0 is 250 kHz to 500 kHz.
Figure 4.2.4.1 shows the configuration of the CR oscillation circuit.
OSC2
OSC1
CPU
and peripheral circuits
CCR
R
CR
Fig. 4.2.4.1 Configuration of CR oscillation circuit
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